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GrowthBook Users

Hi! I've encountered an issue repeatedly where Growthbook fails to activate my A/B tests, citing the error "Skip because missing hashAttribute". In this instance, the "hashAttribute" is set to "user_id", but I've also observed the same error when using "id". Could you please explain the root cause of this issue and advise on how to rectify it?"

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How are you setting the user's attributes in your SDK? If they are missing, enrollment will fail.

Hi!
We set the user's attributes in our SDK initialization under the `attributes` object. Here’s how we do it:

attributes: {
  id: clientId, // Retrieved from gtagApiResult.client_id
  user_id: {{dlv - businessPartnerId}}, // Retrieved from dataLayer variable
  mobile: isMobile, // Boolean based on user agent
  market_type: {{lt - segment_id}} // Retrieved from another dataLayer variable
}

The `user_id` attribute is populated from Google Tag Manager. I checked our implementation, and based on debugging, we can confirm that it has a valid string value (e.g., `"212810946"`) when the GrowthBook script runs.
However, we still get the error `"Skip because missing hashAttribute"`. Could this be related to the expected data type or how GrowthBook reads the attributes?
Is there a way to debug which attributes GrowthBook receives at runtime to verify that `user_id` is correctly passed?

Is this on a web page? Using our dev tools will show the current attributes that GrowthBook is seeing. <https://docs.growthbook.io/tools/chrome-extension>

yes, i did so, and it showed us there are no attributes growthbook can use